how to create custom TypeHandlerCallback to trim string whitespace

[novotny]

Hi,

 I'm using an informix database and querying for a map containing string
keys and integer values. The keys are stored as type CHAR in the database
and normally when I get them back they contain extar whitespace. I'm trying
to create a custom handler like so:

public class StringTypeHandlerCallback implements TypeHandlerCallback {


    public void setParameter(ParameterSetter parameterSetter, Object o)
throws SQLException {
        parameterSetter.setString(((String)o).trim());
    }

    public Object getResult(ResultGetter resultGetter) throws SQLException {
        return resultGetter.getString().trim();
    }

    public Object valueOf(String s) {
        return s.trim();
    }
}

and I added 

<typeHandler callback="StringTypeHandlerCallback" javaType="string"
jdbcType="CHAR"/>

but it doesn't seem to work-- the strings still have the whitespace.

Here was my query:

Map<String, Integer> m = sqlMapClient.queryForMap(QUERY, qwest, "sm_qwest",
"tm_id");

Any help is greatly appreciated!

Thanks, Jason
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